JP5953747B2 - Transmission with auxiliary transmission mechanism - Google Patents

Description

  The present invention relates to a transmission with a subtransmission mechanism, and more particularly to a transmission with a subtransmission mechanism that simultaneously shifts a main transmission mechanism and a subtransmission mechanism.

  Generally, a manual transmission is provided with a synchro mechanism that enables a smooth shifting operation. There are several types of synchro mechanisms depending on the structure. For example, there is known a Borgwana type synchronizer mechanism in which a synchronizer ring is provided between a sleeve and a synchronized gear, and synchronization is performed by an inner friction surface of the synchronizer ring and a chamfer (see, for example, Patent Document 1).

  In addition, it has a structure similar to an internal expansion drum brake, and it uses a self-boosting effect during synchronization to synchronize a so-called servo type that enables gear shifting operation in a short time and with less shock even under severe operating conditions. A mechanism is also known (see, for example, Patent Document 2).

JP-A-5-157127 Japanese Patent Laid-Open No. 11-287254

  By the way, in the manual transmission, all the various load fluctuations caused by the synchronization and engagement of the synchronization mechanism are all fed back to the driver as the operating force of the operating lever. In particular, this tendency tends to appear clearly in the above-mentioned Borgwana type synchro mechanism. Therefore, in a transmission with a sub-transmission mechanism, if the operation start timing of the synchro mechanism deviates even a little when the main transmission mechanism and the sub-transmission mechanism are operated at the same time, the operating force of the operating lever changes in a complicated manner and the driver There is a possibility that the speed change feeling will be greatly deteriorated.

  The present invention has been made in view of the above points, and an object of the present invention is to provide a shift feeling of the driver when the main transmission mechanism and the auxiliary transmission mechanism are simultaneously operated in the transmission with the auxiliary transmission mechanism. This is to effectively prevent the shift operability from being deteriorated.

  In order to achieve the above object, a transmission with a subtransmission mechanism according to the present invention is a transmission with a subtransmission mechanism that simultaneously shifts the main transmission mechanism and the subtransmission mechanism by operating the operation lever in the select direction and the shift direction. A sub-transmission synchro mechanism that is provided on the sub-transmission mechanism side and selectively synchronizes the gears of the sub-transmission mechanism, and a gear that is provided on the main transmission mechanism side and selectively synchronizes the gears of the main transmission mechanism. And at least one main transmission synchronization mechanism, wherein either the auxiliary transmission synchronization mechanism or the main transmission synchronization mechanism is a servo-type synchronization mechanism.

  Also, a sub-transmission shaft that extends in the select direction on the sub-transmission mechanism side and rotates in response to an operation in the shift direction of the operation lever, and a lower extension shaft is provided to extend downward from the sub-transmission shaft. A sub-shifting shift lever that rotates integrally with the sub-shifting shaft; a sub-shifting shift block that is disposed below the sub-shifting shaft and engages with a lower end of the sub-shifting shift lever; A rotatable main transmission shaft provided extending in the selection direction on the main transmission mechanism side, and a selection direction provided by extending downward from the main transmission shaft and operating the operation lever in the selection direction. And a plurality of shift levers that are arranged in parallel in the select direction below the main transmission shaft and engage with a lower end portion of the main transmission shift lever. A shift block for shifting, at least one shift shaft provided extending in the shift direction and connected to the shift block for main shifting, and a first protrusion protruding from the auxiliary shifting shaft, A second protrusion projecting from the main transmission shaft; and a connecting member having one end rotatably connected to the first protrusion and the other end rotatably connected to the second protrusion. Further, even if the auxiliary transmission shaft is rotated in any direction by the operation of the operation lever in the shift direction, the rotational force transmitted to the main transmission shaft through the connection member is caused by the connection member. It may be converted into one direction and rotate the main shift lever in only one direction.

  Of the plurality of main transmission shift blocks, the main transmission shift block not corresponding to the movement direction of the main transmission shift fork to which the corresponding gear corresponds corresponds to a rod fixed to the main transmission shift block, one end May be connected to the shift shaft via a reversing mechanism having a rotatable reversing lever hinged to the rod and having the other end hinged to the shift shaft.

  In addition, the first protrusion is inclined at a predetermined angle toward the main transmission shaft from the auxiliary transmission shaft upward, and the second protrusion is upward from the main transmission shaft. The connecting member is inclined at a predetermined angle on the side of the auxiliary transmission shaft, and one end of the connecting member is hinged to the upper end of the first projecting portion and the other end is hinged to the upper end of the second projecting portion. Also good.

  In addition, the guide member further includes a guide member that guides the connecting member so as to be horizontally movable in the shift direction, the first protrusion is provided on one end surface of the sub-transmission shaft adjacent to the periphery, and the second protrusion is The main transmission shaft is provided at one end surface adjacent to the periphery, and the connecting member is formed with a guide groove at one end for guiding the first protrusion in the vertical direction and at the other end with the second protrusion. A hole through which the part is rotatably inserted may be formed.

  According to the transmission with a subtransmission mechanism of the present invention, it is possible to effectively prevent the driver's shift feeling and deterioration of shift operability when the main transmission mechanism and the subtransmission mechanism are simultaneously shifted.

It is a skeleton figure which shows the transmission with an auxiliary transmission mechanism which concerns on one Embodiment of this invention. (A) is the typical block diagram which looked at the synchromesh mechanism for sub-transmission of the transmission with a sub-transmission mechanism concerning one embodiment of the present invention from the side, and (b) is the typical block diagram which looked at (a) from the front It is. It is a typical perspective view which shows the shift operation apparatus of the transmission with an auxiliary transmission mechanism which concerns on one Embodiment of this invention. It is the typical whole block diagram which looked at the transmission mechanism of the transmission with an auxiliary transmission mechanism which concerns on one Embodiment of this invention from the top. It is the typical detailed block diagram which looked at the principal part of the transmission mechanism of the transmission with an auxiliary transmission mechanism which concerns on one Embodiment of this invention. It is the typical detailed block diagram which looked at the principal part of the transmission mechanism of the transmission with an auxiliary transmission mechanism which concerns on one Embodiment of this invention from the top surface. It is the typical detailed block diagram which looked at the principal part of the transmission mechanism of the transmission with an auxiliary transmission mechanism which concerns on other embodiment.

  Hereinafter, based on FIGS. 1-6, the transmission with an auxiliary transmission mechanism which concerns on one Embodiment of this invention is demonstrated. The same parts are denoted by the same reference numerals, and their names and functions are also the same. Therefore, detailed description thereof will not be repeated.

  As shown in FIG. 1, a transmission with a sub-transmission mechanism (hereinafter simply referred to as a transmission) 10 according to the present embodiment is provided with a splitter-type sub-transmission mechanism 11 disposed on the input side and on the output side. The main transmission mechanism 12 is provided.

  An input shaft 13 to which an engine output (not shown) is transmitted is disposed on the auxiliary transmission mechanism 11 side. A main shaft 14 is disposed coaxially with the input shaft 13 on the main transmission mechanism 12 side. Further, the auxiliary transmission mechanism 11 and the main transmission mechanism 12 are provided with a counter shaft 15 parallel to the input shaft 13 and the main shaft 14.

  A splitter low speed gear 20 is provided on the input shaft 13 so as to be relatively rotatable. Further, on the main shaft 14, a splitter high speed gear 21, a main third speed gear 22, a main second speed gear 23, a main first speed gear 24, and a main reverse gear 25 are relatively rotated in order from the input side (left side in FIG. 1). It is provided as possible. The counter shaft 15 includes a counter low-speed gear 30 that meshes with the splitter low-speed gear 20, a counter high-speed gear 31 that meshes with the splitter high-speed gear 21, a counter third-speed gear 32 that meshes with the main third-speed gear 22, and a main second-speed gear. A counter second gear 33 that meshes with the main gear 23, a counter first gear 34 that meshes with the main first gear 24, and a counter reverse gear 36 that meshes with the main reverse gear 25 and the idler gear 35 are fixed. That is, the transmission 10 according to the present embodiment has six forward speeds (first speed L to third speed H) and two reverse speeds by selectively switching the splitter gears 20 and 21 and selectively switching the main gears 22 to 25. (Reverse L, reverse H) speed change is possible.

  On the side of the sub-transmission mechanism 11, a sub-transmission synchronization mechanism 70 that selectively synchronizes the splitter low speed gear 20 or the splitter high speed gear 21 is provided. The sub-transmission synchro mechanism 70 is a known servo-type synchro mechanism, and the spline inner diameter side of the sleeve 71 forms a friction surface as shown in FIG. 2 (a) and 2 (b), the synchronized gears 20 and 21 are provided with C-shaped synchronizer rings 72 and 73 having friction surfaces, respectively, and an anchor block 74 and a brake band are provided on the inside thereof. 75 and a thrust block 76 are accommodated.

  When the frictional surface of the sleeve 71 and the frictional surfaces of the synchronizer rings 72 and 73 come into contact with each other due to the movement of the sleeve 71, the sub-transmission synchronizer mechanism 70 rotates the synchronizer rings 72 and 73, and the anchor block 74 and the brake band. 75 and thrust block 76 are pressed. When the sleeve 71 further moves, the brake band 75 is bent and enlarged by the friction torque between the sleeve 71 and the synchronizer rings 72 and 73 and the fulcrum action of the anchor block 74 to generate a self-boosting effect. As a result, the synchronizer rings 72 and 73 are contracted and moved, and meshed with the gear splines 77 and 78 of the synchronized gears 20 and 21, so that a speed change operation with less shock is performed in a short time.

  On the main transmission mechanism 12 side, a first main transmission synchronization mechanism 37 that selectively synchronizes the main third speed gear 22 or the main second speed gear 23 and the main first speed gear 24 or the main reverse gear 25 are selectively synchronized. And a second main transmission synchro mechanism 38 to be operated. The first main transmission synchronization mechanism 37 and the second main transmission synchronization mechanism 38 are configured by known Borgwarner type synchronization mechanisms.

  Next, the shift operation device 80 of the present embodiment will be described based on FIG.

  The shift operation device 80 includes a plurality of H-type gates 81 and an operation lever 82 that can move the H-type gates 81 so that the sub-transmission mechanism 11 and the main transmission mechanism 12 can be operated simultaneously. . A select path 83 is provided in the select direction of the H-shaped gate 81, and a neutral position N corresponding to the neutral mode is set at the center thereof. Further, four shift paths 84 to 87 orthogonal to the select path 83 are provided in the shift direction of the H-type gate 81. Further, shift positions corresponding to the above-described six forward speeds (1st speed L to 3rd speed H) and 2nd reverse speeds (reverse L, reverse H) are set at the ends of these four shift paths 84 to 87, respectively. Has been. That is, the shift operation device 80 of the present embodiment is connected to the shift mechanism of the subtransmission mechanism 11 when the operation lever 82 is operated in the shift direction, while the selection mechanism of the main transmission mechanism 12 is operated when the operation lever 82 is operated in the select direction. It is configured to be connected to.

  Next, based on FIGS. 4-6, the transmission mechanism 40 of this embodiment is demonstrated.

  As shown in FIG. 4, the speed change mechanism 40 of the present embodiment includes a first shift shaft 41 extending in the shift direction, a second shift shaft 42 extending in parallel with the first shift shaft 41, and a sub-speed change. A splitter shift shaft 43 extending in the select direction on the mechanism 11 side, a main shift shaft 44 extending in the select direction on the main transmission mechanism 12 side, and a splitter shift lever 45 provided on the splitter shift shaft 43. A splitter link arm 46 provided on the splitter shift shaft 43, a main shift lever 47 provided on the main shift shaft 44, a main link arm 48 provided on the main shift shaft 44, A link member 49 for connecting the splitter link arm 46 and the main link arm 48. The splitter shift block 50 disposed below the splitter shift shaft 43 and a plurality (four in this embodiment) of main shift blocks 51 to 54 arranged in parallel in the select direction below the main shift shaft 44. A splitter shift fork 55 provided on the first shift shaft 41 so as to be movable in the axial direction, a main R / 1-speed shift fork 57 fixed to the second shift shaft 42, and the first shift shaft 41. It includes a fixed main 2/3 speed shift fork 58, a main R / 1 speed connection mechanism 60, and a main 2/3 speed connection mechanism (not shown).

  As shown in FIG. 5, the splitter shift lever 45 is provided to extend downward from the splitter shift shaft 43. The upper end of the splitter shift lever 45 is fixed to the splitter shift shaft 43, while the lower end engages with a recess formed in the center of the splitter shift block 50. That is, when the shift mechanism of the subtransmission mechanism 11 is shifted (see arrow X in FIG. 4) by the operation of the operation lever 82 (see FIG. 3) in the shift direction, the splitter shift lever 45 is moved to the splitter shift shaft. 43 is rotated together. Thereby, the shift block 50 for splitters is comprised so that it may move to the left-right direction (refer arrow X, Y in FIG. 5) according to operation to the shift direction of the operation lever 82. FIG.

  The splitter link arm 46 extends from the splitter shift shaft 43 upward at an angle with a predetermined angle toward the main shift shaft 44 (right side in FIG. 5). The lower end portion of the splitter link arm 46 is fixed to the splitter shift shaft 43, while the upper end portion is hinged to one end portion (left end in FIG. 5) of the link member 49 so as to be rotatable.

  The main shift lever 47 extends downward from the main shift shaft 44 and has a lower end engaged with a recess formed in the center of the main shift blocks 51 to 54. The upper end of the main shift lever 47 is spline-fitted to the main shift shaft 44 and rotates integrally with the main shift shaft 44 while moving the main shift shaft 44 in the axial direction (select direction). It is configured to be possible. That is, when the selection mechanism of the main transmission mechanism 12 is selected (see arrow Y in FIG. 4) by the operation of the operation lever 82 (see FIG. 3) in the selection direction, the main shift lever 47 is moved to the main shift shaft. 44 is moved in the select direction. As a result, the lower end portion of the main shift lever 47 engages with the concave portions of the main shift blocks 51 to 54 corresponding to the selected arbitrary shift position.

  The main link arm 48 extends from the main shift shaft 44 at an angle with a predetermined angle toward the splitter shift shaft 43 side (left side in FIG. 5). The lower end portion of the main link arm 48 is fixed to the main shift shaft 44, while the upper end portion is hinged to the other end portion (the right end in FIG. 5) of the link member 49 so as to be rotatable.

  That is, in the speed change mechanism 40 according to the present embodiment, one end of the link member 49 is hinged to the splitter link arm 46 and the other end is rotatably connected to the main link arm 48. This is a four-bar linkage mechanism having two hinge connection portions and the shaft center of the main shift shaft 44 as rotation fulcrums. As a result, the left and right rotational forces (see arrows C and D in FIG. 5) transmitted from the splitter shift shaft 43 to the link member 49 via the splitter link arm 46 are rotated in the left direction by the link member 49. Force (see arrow E in FIG. 5) is converted. As a result, the splitter shift block 50 is moved in both the left and right directions (see arrows X and Y in FIG. 5) according to the operation of the operation lever 82 in the shift direction, while the main shift blocks 51 to 54 are moved in the right direction. It is moved only in one direction (see arrow Y in FIG. 5).

  Next, the main R / 1-speed connection mechanism 60 according to this embodiment will be described with reference to FIG.

  The main R / 1 speed connecting mechanism 60 includes a connecting member 61 for connecting and fixing the main reverse shift block 51 and the second shift shaft 42, a rod 62 fixed to the main first speed shift block 52, and a central portion. And a reversing lever 63 that can rotate around the fulcrum. The reversing lever 63 has one end hinged to the rod 62 and the other end hinged to the second shift shaft 42.

  That is, the rightward moving force (see arrow A in FIG. 6) of the main reverse shift block 51 is directly transmitted to the second shift shaft 42 via the connection member 61, while the main first speed shift is performed. The moving force of the block 52 in the right direction (see arrow A in FIG. 6) is reversed to the moving force in the left direction (see arrow B in FIG. 6) by the rotation operation of the reversing lever 63 and applied to the second shift shaft 42. Communicated. As a result, when the main reverse shift block 51 moves in the right direction, the main R / 1 speed shift fork 57 moves to the right side of the main reverse gear shift fork 57 (see FIG. When the main first-speed shift block 52 moves to the right, the main 1 disposed on the left side of the main R / 1-speed shift fork 57 is rotated by the reversing lever 63. It is configured to move toward the speed gear 24 (see FIG. 1).

  In the main 2/3 speed connecting mechanism (not shown), the connecting member 61 connects and fixes the main 2 speed shift block 53 and the first shift shaft 41, and the reversing lever 63 is the main 3 speed shift block. The main R / 1 speed connecting mechanism 60 is configured in substantially the same manner except that it is hingedly connected to the rod 62 fixed to 54 and the first shift shaft 41. Therefore, detailed description and illustration of the main 2/3 speed connection mechanism are omitted.

  Next, the speed change operation of the transmission 10 according to the present embodiment will be described.

  First, the reverse L shifting operation will be described. When the operating lever 82 shown in FIG. 3 is operated in the select direction from the neutral position N to the orthogonal point to the shift path 84 in the select path 83, the main shift lever 47 is moved to the main shift shaft 44 by the select operation of the select mechanism. Move up in the select direction. As a result, the lower end portion of the main shift lever 47 is engaged with the concave portion of the main reverse shift block 51.

  In this state, when the operation lever 82 is operated in the shift direction to the position of the reverse L through the shift path 84, the splitter shift lever 45 is rotated clockwise together with the splitter shift shaft 43 by the shift operation of the shift mechanism, that is, to the right. It is rotated around (see arrow A in FIG. 5).

  As a result, the splitter shift fork 55 moves to the left with the splitter shift block 50 toward the splitter low speed gear 20 (see FIG. 1), and the friction surface of the sleeve 71 and the synchronizer ring 72 shown in FIG. The synchronizer ring 72 is rotated and the anchor block 74, the brake band 75, and the thrust block 76 are pushed. When the sleeve 71 further moves, the brake band 75 is bent and enlarged by the friction torque between the sleeve 71 and the synchronizer ring 72 and the fulcrum action of the anchor block 74 to generate a self-boosting effect. As a result, the synchronizer ring 72 is contracted and moved, and meshed with the gear spline 77 of the splitter low speed gear 20.

  On the other hand, the clockwise (clockwise) rotational force of the splitter shift shaft 43 is converted into a counterclockwise (counterclockwise) rotational force by the link member 49 constituting a part of the four-bar linkage mechanism. The shift lever 47 is rotated counterclockwise, that is, counterclockwise (see arrow F in FIG. 5). As a result, the main R / 1-speed shift fork 57 moves to the right in the direction of the main reverse gear 25 (see FIG. 1) together with the main reverse shift block 51, and a corresponding sleeve (not shown) and Engage the dog gear.

  Next, the reverse H shift operation will be described. When the operating lever 82 shown in FIG. 3 is operated in the select direction from the neutral position N to the orthogonal point to the shift path 84 in the select path 83, the main shift lever 47 is moved to the main shift shaft 44 by the select operation of the select mechanism. Move up in the select direction. As a result, the lower end portion of the main shift lever 47 is engaged with the concave portion of the main reverse shift block 51.

  In this state, when the operation lever 82 is operated in the shift direction to the position of the backward movement H through the shift path 84, the splitter shift lever 45 is rotated counterclockwise integrally with the splitter shift shaft 43 by the shift operation of the shift mechanism, that is, It is rotated counterclockwise (see arrow B in FIG. 5).

  As a result, the splitter shift fork 55 moves to the right with the splitter shift block 50 toward the splitter high speed gear 21 (see FIG. 1), and the friction surface of the sleeve 71 and the synchronizer ring 73 shown in FIG. And the synchronizer ring 73 are rotated, and the anchor block 74, the brake band 75, and the thrust block 76 are pushed. When the sleeve 71 further moves, the brake band 75 is bent and enlarged by the friction torque between the sleeve 71 and the synchronizer ring 73 and the fulcrum action of the anchor block 74 to generate a self-boosting effect. As a result, the synchronizer ring 73 is contracted and moved, and meshes with the gear spline 78 of the splitter high speed gear 21.

  On the other hand, the counterclockwise (counterclockwise) rotational force of the splitter shift shaft 43 is transmitted via a link member 49 that forms a part of the four-bar linkage mechanism, and the main shift lever 47 is counterclockwise. That is, it is rotated counterclockwise (see arrow F in FIG. 5). As a result, the main R / 1-speed shift fork 57 moves to the right in the direction of the main reverse gear 25 (see FIG. 1) together with the main reverse shift block 51, and a corresponding sleeve (not shown) and Engage the dog gear.

  That is, according to the transmission 10 of the present embodiment, regardless of whether the operation lever 82 of the shift operation device 80 is operated in the shift direction 84 in the reverse L or reverse H direction on the shift path 84, The rotational force transmitted to the shift shaft 44 is converted into a counterclockwise (counterclockwise) rotational force by the link member 49. As a result, regardless of the shift direction of the operation lever 82, the main R / 1-speed shift fork 57 is connected to the main reverse gear 25 together with the main reverse shift block 51 and the second shift shaft 42 (see FIG. 1). ) To be surely moved in the right direction.

  In addition, the servo-type sub-shift synchronizer mechanism 70 is configured such that a shift is performed in a short time and with little occurrence of shock due to synchronization by utilizing the self-boosting effect.

  Next, the shifting operation of the first speed L will be described. When the operation lever 82 shown in FIG. 3 is operated in the select direction from the neutral position N to the orthogonal point to the shift path 85 in the select path 83, the main shift lever 47 is moved to the main shift shaft 44 by the select operation of the select mechanism. Move up in the select direction. As a result, the lower end portion of the main shift lever 47 is engaged with the concave portion of the main first speed shift block 52.

  In this state, when the operation lever 82 is operated in the shift direction to the position of the first speed L through the shift path 85, the splitter shift lever 45 is rotated clockwise together with the splitter shift shaft 43 by the shift operation of the shift mechanism, that is, It is rotated clockwise (see arrow A in FIG. 4).

  As a result, the splitter shift fork 55 moves to the left with the splitter shift block 50 toward the splitter low speed gear 20 (see FIG. 1), and the friction surface of the sleeve 71 and the synchronizer ring 72 shown in FIG. The synchronizer ring 72 is rotated and the anchor block 74, the brake band 75, and the thrust block 76 are pushed. When the sleeve 71 further moves, the brake band 75 is bent and enlarged by the friction torque between the sleeve 71 and the synchronizer ring 72 and the fulcrum action of the anchor block 74 to generate a self-boosting effect. As a result, the synchronizer ring 72 is contracted and moved, and meshed with the gear spline 77 of the splitter low speed gear 20.

  On the other hand, the clockwise (clockwise) rotational force of the splitter shift shaft 43 is converted into a counterclockwise (counterclockwise) rotational force by the link member 49 constituting a part of the four-bar linkage mechanism. The shift lever 47 is rotated counterclockwise (see arrow F in FIG. 5), and the main first speed shift block 52 is moved rightward. Then, the rightward moving force of the main first speed shift block 52 is converted to the leftward by the rotating operation of the reversing lever 63 and transmitted to the second shift shaft 42. As a result, the main R / 1-speed shift fork 57 moves to the left with the second shift shaft 42 toward the main first-speed gear 24 (see FIG. 1), and a corresponding sleeve (not shown) Engage the dog gear.

  Next, the shifting operation of the first speed H will be described. When the operation lever 82 shown in FIG. 3 is operated in the select direction from the neutral position N to the orthogonal point to the shift path 85 in the select path 83, the main shift lever 47 is moved to the main shift shaft 44 by the select operation of the select mechanism. Move up in the select direction. As a result, the lower end portion of the main shift lever 47 is engaged with the concave portion of the main first speed shift block 52.

  In this state, when the operation lever 82 is operated in the shift direction to the position of the first speed H through the shift path 85, the splitter shift lever 45 is rotated counterclockwise integrally with the splitter shift shaft 43 by the shift operation of the shift mechanism. That is, it is rotated counterclockwise (see arrow B in FIG. 5).

  As a result, the splitter shift fork 55 moves to the right with the splitter shift block 50 toward the splitter high speed gear 21 (see FIG. 1), and the friction surface of the sleeve 71 and the synchronizer ring 73 shown in FIG. And the synchronizer ring 73 are rotated, and the anchor block 74, the brake band 75, and the thrust block 76 are pushed. When the sleeve 71 further moves, the brake band 75 is bent and enlarged by the friction torque between the sleeve 71 and the synchronizer ring 73 and the fulcrum action of the anchor block 74 to generate a self-boosting effect. As a result, the synchronizer ring 73 is contracted and moved, and meshes with the gear spline 78 of the splitter high speed gear 21.

  On the other hand, the counterclockwise (counterclockwise) rotational force of the splitter shift shaft 43 is transmitted via a link member 49 that forms a part of the four-bar linkage mechanism, and the main shift lever 47 rotates counterclockwise ( The main first speed shift block 52 is moved to the right while rotating in the direction indicated by the arrow F in FIG. Then, the rightward moving force of the main first speed shift block 52 is converted to the leftward by the rotating operation of the reversing lever 63 and transmitted to the second shift shaft 42. As a result, the main R / 1-speed shift fork 57 moves to the left with the second shift shaft 42 toward the main first-speed gear 24 (see FIG. 1), and a corresponding sleeve (not shown) Engage the dog gear.

  That is, according to the transmission 10 of the present embodiment, regardless of whether the operation lever 82 of the shift operation device 80 is operated on the shift path 85 in the shift direction of the first speed L or the first speed H, the shift shaft 43 for the splitter The rotational force transmitted to the main shift shaft 44 is converted into a counterclockwise (counterclockwise) rotational force by the link member 49. Further, the rightward moving force transmitted to the main first speed shift block 52 is converted to the left by the rotation of the reversing lever 63 and transmitted to the second shift shaft 42. Thus, regardless of the shift direction of the operation lever 82, the main R / 1st speed shift fork 57 moves leftward toward the main first speed gear 24 (see FIG. 1) together with the second shift shaft 42. It is configured to be surely moved.

  In addition, the servo-type sub-shift synchronizer mechanism 70 is configured such that a shift is performed in a short time and with little occurrence of shock due to synchronization by utilizing the self-boosting effect.

  The speed change operation of the second speed and the second speed (second speed L and the second speed H) is substantially the same as the second reverse speed (reverse speed L and the reverse speed H), and the third speed and the second speed (the third speed L and the third speed H). ) Operates in substantially the same manner as the first speed and the second speed (first speed L, first speed H). Therefore, detailed description of the speed change operation for the second speed and the second speed (second speed L, second speed H) and the third speed and the second speed (third speed L, third speed H) is omitted.

  As described in detail above, in the transmission 10 according to the present embodiment, the servo-type sub-transmission synchronizer mechanism 70 is provided on the sub-transmission mechanism 11 side, and the Borgwarner-type first main transmission synchronizer is provided on the main transmission mechanism 12 side. A mechanism 37 and a second main transmission synchro mechanism 38 are provided.

  Therefore, even when the sub-transmission mechanism 11 and the main transmission mechanism 12 are simultaneously operated to shift, the self-boosting effect of the servo-type sub-transmission synchronizer mechanism 70 prevents the occurrence of shock and deterioration of the shift feeling. It can be effectively prevented.

  Further, according to the transmission 10 of the present embodiment, the shift between the auxiliary transmission mechanism 11 and the main transmission mechanism 12 can be simultaneously performed only by operating the operation lever 82 of the shift operation device 80 in the select direction and the shift direction. it can.

  Accordingly, it is not necessary to separately provide a shift operation device corresponding to the main transmission mechanism and the sub-transmission mechanism as in the conventional device, and the sub-transmission mechanism 11 and the main transmission mechanism 12 can be obtained by operating only one operation lever 82. Simultaneous shifting can be achieved, and the operability of the driver can be effectively improved.

  Further, since it is not necessary to switch the operation of the subtransmission mechanism 11 using an actuator such as an electric, pneumatic, or hydraulic actuator, it is possible to effectively suppress a decrease in reliability and an increase in cost due to the mounting of the actuator. Can do.

  In addition, this invention is not limited to the above-mentioned embodiment, In the range which does not deviate from the meaning of this invention, it can change suitably and can implement.

  For example, as shown in FIG. 7, the splitter link arm 46 is provided as a cylindrical protrusion 46a on one end surface of the splitter shift shaft 43 adjacent to the periphery, and the main link arm 48 is provided as a cylindrical protrusion. 48a may be provided on one end face of the main shift shaft 44 adjacent to the periphery. In this case, a guide member 90 that guides the link member 49 so as to be horizontally movable in the shift direction is provided, and a guide groove 49a that guides the protrusion 46a in the vertical direction is formed at one end of the link member 49 and at the other end. What is necessary is just to form the hole 49b which penetrates the protrusion part 48a rotatably.

  Further, the auxiliary transmission synchronization mechanism 70 on the auxiliary transmission mechanism 11 side is a Borgwana type synchronization mechanism, and the first main transmission synchronization mechanism 37 and the second main transmission synchronization mechanism 38 on the main transmission mechanism 12 side are servo-type synchronization mechanisms. It is good. In this case, the same effects as those of the above-described embodiment can be obtained.

  Further, the transmission 10 is not limited to 6 forward speeds (1st speed L to 3rd speed H), but is 4 forward speeds (1st speed L to 2nd speed H), 8 forward speeds (1st speed L to 4th speed H), or The present invention can be widely applied to transmissions having more stages.

  Further, the transmission 10 is not limited to a manual transmission, and can be applied to a mechanical manual transmission (AMT) in which a shift operation and a selection operation are automated by an actuator or the like.

DESCRIPTION OF SYMBOLS 10 Transmission 11 Subtransmission mechanism 12 Main transmission mechanism 37 1st main transmission synchro mechanism 38 2nd main transmission synchro mechanism 41 1st shift shaft 42 2nd shift shaft 43 Shift shaft for subtransmission (shaft for subtransmission)
44 Main shift shaft (Main transmission shaft)
45 Shift lever for splitter (shift lever for auxiliary transmission)
46 Link arm for splitter (first protrusion)
47 Shift lever for main (shift lever for main transmission)
48 Main link arm (second protrusion)
49 Link member
50 Shift block for splitter (shift block for auxiliary transmission)
51-54 Main shift block (shift block for main transmission)
60 Connection mechanism for main R / 1st speed 63 Reverse lever 70 Synchro mechanism for auxiliary transmission 82 Operation lever

Claims (4)

A transmission with a sub-transmission mechanism that simultaneously shifts the main transmission mechanism and the sub-transmission mechanism by operating the operation lever in the select direction and the shift direction,
A sub-transmission synchro mechanism provided on the sub-transmission mechanism side for selectively synchronizing the gears of the sub-transmission mechanism;
Including at least one main transmission synchro mechanism provided on the main transmission mechanism side for selectively synchronizing the gears of the main transmission mechanism;
Either one of the sub-transmission sync mechanism or the main shift sync mechanism is a servo sync mechanism,
The transmission with the auxiliary transmission mechanism is
A sub-shifting shaft that extends in the select direction on the side of the sub-transmission mechanism and rotates in response to an operation in the shift direction of the operation lever, and extends downward from the sub-shift shaft. A sub-shifting shift lever that rotates integrally with the sub-shifting shaft; a sub-shifting shift block that is disposed below the sub-shifting shaft and engages with a lower end of the sub-shifting shift lever; A rotatable main speed change shaft provided extending in the select direction on the mechanism side, and provided extending downward from the main speed change shaft and moved in the select direction by operation of the operation lever in the select direction. A main shift gear shift lever, and a plurality of main shift gears arranged in parallel in the select direction below the main shift shaft and engaged with the lower end portion of the main shift gear shift lever A shift block; at least one shift shaft provided extending in the shift direction and connected to the main shift shift block; a first protrusion projecting from the sub-shift shaft; A second projecting portion projecting from the speed change shaft; and a connecting member having one end rotatably coupled to the first projecting portion and the other end rotatably coupled to the second projecting portion. ,
Regardless of which direction the auxiliary transmission shaft is rotated in the shift direction of the operating lever, the rotational force transmitted to the main transmission shaft via the connecting member is unidirectionally driven by the connecting member. A transmission with a subtransmission mechanism that is converted and rotates the shift lever for main transmission only in one direction. Among the plurality of main transmission shift blocks, the main transmission shift block that does not correspond to the movement direction of the main transmission shift fork to which the corresponding gear corresponds corresponds to the rod fixed to the main transmission shift block and one end of the rod. The transmission with a subtransmission mechanism according to claim 1 , wherein the transmission is connected to the shift shaft through a reversing mechanism having a rotatable reversing lever hinged to the rod and having the other end hinged to the shift shaft. . The first protrusion is provided to be inclined at a predetermined angle toward the main transmission shaft from the auxiliary transmission shaft upward.
The second projecting portion is provided to be inclined at a predetermined angle toward the auxiliary transmission shaft from the main transmission shaft upward.
The connecting member is subtransmission mechanism with transmission according to claim 1 or 2 is hinged at the other end to the upper end of the second projecting portion while being hinged at one end to the upper end of the first projecting portion. A guide member for guiding the connecting member so as to be horizontally movable in the shift direction;
The first projecting portion is provided on one end surface of the auxiliary transmission shaft adjacent to the periphery,
The second protrusion is provided adjacent to a peripheral edge on one end surface of the main transmission shaft.
The connecting member according to claim 1 or 2 holes for rotatably inserting the second projecting portion at the other end with the guide groove for guiding the first projecting portion in the vertical direction at one end portion is to be formed A transmission with a subtransmission mechanism described in 1.

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